Separable core.



J. H. NESBI'TT & J. C. LAURITZEN.

SEFARABLE CORE.

APPLICATION man MAR. 6, 191a,

Patented Mar. 11, 1919.

Jo'fin Ciaszuitzen, Jain/es JzG/Veazltif UNITED STATES PATENT OFFICE JAMES H. NESBITT AND JOHN C. LAUBI'IZEN, OI AKRON, OHIO;

ASSIGNOBS, n! humor AND MESNE ASSIGNMENTS, OF ONE-THIRD TO SAID LAUBJTZEN AND TWO-THIRDS TO THE WILLIAMS FOUNDRY AN D MACHINE COMPANY, OF RATION OF OHIO, (ORGANIZED IN 1917.)

AKRON, onto, a CORPO- SEPARABLE COR-E.

Patented Mar. 11, 1919.

Application filed March 8, 1918. Serial No. 752,464.

To all whom it may concern: x

Be it known that we, Ja vins H.'NEsB1Tr and JOHN C. LAURITZEN,CitiZenS of the United States, residing at Akron, Ohio, have,

tensible edges:

The invention has among others for its ob-; jects to provide a construction in which the number of parts shall be reduced to a minimum and be capable of being quickly and easily assembled and which, when so assembled, will be held firmly together and in accurate alinement without the use of bolts or similar clamping devices.

\Vith these and other objects in view. the invention includes the novel features of construction and arrangement and combination of arts hereinafter described and particular y defined by the appended claims.

A core constructed in accordance with our invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the assembled core, and

Fig. 2 isa section taken on a radial line through one of the openings.

In the particular embodiment of our invention illustrated in the accompanying drawings, t e core includes an annulus formed of a lurality of sections 1 and comprising a main bod ortion having its outer portion 1 substantial y circular in cross section, and an inwardly extending flange 2 having an enlarged mar inal portion 3 providing shoulders 3', su stantially perpendicular to the side faces of flange.

Abuttin ably provi ed with interlocking tongues and grooves 1 and one of the sections preferably tapers outwardly so that when the looking, or retaining ring, to be hereinafter described, is removed this section may be forced inwardly radially for collapsing the ends of the sections are prefer:

flanges which shape the edges of the tire and cotiperate with the mold sections in the manner well understood by those skilled in the art.

The enlarged portion is provided in one side with an annular groove or channel 3" which is designed to receive a ring 4. Either the. channel or the ring, or both, is formed more or less of wedge-shape in cross section, and the ring is thus adapted to'be driven into the groove or channel when the sections have been assembled in core form with the ggoove or channel uppermost. \Ve prefer t at the complemental inner side walls of the ring andchannel shall be inclined, or beveled, as shown in the accompanying drawing.

When the core is to be removed from the tire the. ring may be readily removed by driving it out through the instrumentality of a suitable tool insertible in one or more openings 3*, which are spaced apart from one another and extend transversely through the flange from the bottom wall of the channel 3 to the op osite face of the flange to that through whlch the channel opens.

By our construction above described, it i will be seen that we have reduced the construction to a minimum of simplicity and number of parts, as we have only one part besides the core sections and that a simple metal ring; thereby greatly reducing the cost of manufacture.

We have also greatly facilitated the assembling and separating of the core, as we have eliminated all bolts and nuts, or other similar securing devices, and enabled the parts to be locked in assembled formand nnlocked for separating by themel'e driving of the wedge ring into the groove and the reverse action of driving it out respectively.

Having thus described our invention what we claim is:

1. A core of' thecharacter described comprising a plurality of separable sections havmg inwardly extending ortions rovided with grooves, which, int e assembled condition of the sections, provide an annular channel and an annular locking ring adapted to be forced into and out of said channel by a substantially direct axial movement and t9 beretained in looking position by fricv tlonal engagement.

"rihgE-tadapted to be held in said channel and casings built and vulcanized thereon, and

consisting of an annular sectional member Vided with a channel opening out ugh one face thereof and an annular retained therein by frictional contact of one wall thereof with a contiguous wall of the channel and to be dislodged from the channel by pressure applied in a direction parallel to its axis at spaced apart points.

3. A core of the character described comrising a plurality of separable sections havmg inwardly extending portions provided with grooves which, in the assembled condition of the sections, provide an annular channel, and an annular wedge ring insertible in said channel and adapted to be held therein by friction.

4. A core of the character described comrising a plurality of separable sections haw mg interlocking ends and inwardly extending portionsprovided with grooves which,

in the assembled condition of the sections,. provide an annular channel, and an annular .4 wedge ring insertlble 1n said channel and;

adapted to "be held therein by friction.

5. A core of the character described com= prising a plurality of separable sections having tongue and grooi'ed ends, and inwardly extending portions provided with grooves which, in the assembled condition of the sections, provide an annular channel, an annular wedge ring insertible in said channel and adapted to beheld there by friction, there being openings through the core at the base of said channel for driving out the wedge ring.

6. A core adapted to have tire shoes, or

casings, built and vulcanized thereon, saidcore comprising an annulus formed of a plurality of sections and having surfaces for 006 crating with a 'ret-ainin member to ho] the sections in annular ormation and a sin' le detachable retaining member shiftable y a substantially direct movement, in a direction co-axially of the core, into and out of clamping engagement with said surfaces thereof.

7. A core adapted to have tire shoes, or casings, built' and vulcanized thereon, said core comprising an annulus formed of a plurality of sections and including an inwardly extending flange having a channel therein opening out through one face of the same and a single member for holding the sect-ions in annular formation, said member comprising a ring adapted to be forced within the channel by a substantially direct movement co-axially of the annulus and cooperating with the walls thereof for holding the sections in annular formation.

8. A core adapted to have a tire built and vulcanized thereon, said core including an annulus comprising an outer main body and an inwardly extending flange, the annulus being formed of a plurality of sections arranged end to end and one of the sections tapering outwardly, said flange having an annular channel therein openin out through one face of the same, one of't e side walls of the channel being inclined to the axis of the annulus and an endless tapered ring adapted to be forced within the channel by a. directniovement substantially co-axial of the annulus for retaining the sections of the annulus in annular formation.

9. A core adapted to have tire shoes and casings built and vulcanized thereon, said core including an annulus comprising an outer main body and an inwardly extending flange having an enlarged marginal portion providing shoulders perpendicular to the faces of the flan e, said annulus bein formed of a plurality of sections and saic enlarged portion of the flange having a channel therein opening out through one of JAMES H. 'NESBITT. JOHN c. LAURITZEN.

Witnesses:

J. K. l/VILIaAMS, WM. Franz. 

